double aMin = myMinEdit->text().toDouble();
double aMax = myMaxEdit->text().toDouble();
myScalarBarActor->GetLookupTable()->SetRange( aMin, aMax );
double aMin = myMinEdit->text().toDouble();
double aMax = myMaxEdit->text().toDouble();
myScalarBarActor->GetLookupTable()->SetRange( aMin, aMax );